JP2010187569A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester which solves the problem that threshed products and tailings are concentrated to and easily deposited on a shaking separator near one side on the downstream side of a threshing cylinder in the rotating direction. <P>SOLUTION: The combine harvester is equipped with a rachis-branch treatment mechanism 61 for treating the tailings at the feed end side of a tailing-returning mechanism 60 for returning the threshed and separated tailings to a thresher or the shaking separator 27. A tailing-discharging part 83 facing to the interior of the thresher from the rachis-branch treatment mechanism 61 is opened so as to be positioned at the upper and lower portions of the lower surface of the threshing cylinder 26 in the thresher when viewed from the side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a combine for threshing a harvested cereal and selecting and collecting fine grains from the cereal.

  Conventionally, a combine harvester harvests a traveling machine body on which an engine is mounted, a traveling crawler as a left and right traveling unit that supports the traveling machine body, a driving unit having a steering handle and a driving seat, and an uncut grain culm in a field. A reaping device and a threshing device for threshing the harvested cereals are provided, and are configured to continuously harvest and thresh uncut cereals in the field and collect the grains.

  In the conventional combine, the second product (grains with branch branch, cut grain, etc.) taken out from the swing sorter by the second conveyor is reduced to the swing sorter via the reduction cylinder ( Configured to return). Further, it is also well known that a branch-branch processing mechanism is disposed on the feed end side of the reducing cylinder, the second thing is processed by the branch-branch processing mechanism, and then the second thing is returned to the swing sorter ( For example, see Patent Document 1).

  In the structure of the said patent document 1, the side of the threshing device is erected on the side of the threshing device, and the cerealing cylinder for taking out the first thing (the fine grain after the threshing) from the first conveyor below. In addition, a reduction cylinder is connected to the feed terminal end side of the second conveyor disposed behind the first conveyor on the lower rear side of the swing sorter. The reduction cylinder is arranged so as to extend upward and forward from the rear of the threshing cylinder on the side of the threshing device on the side where the cerealing cylinder is arranged. Accordingly, the whipping cylinder and the reduction cylinder cross each other in a side view. The branch rachis processing case constituting the branch rachis processing mechanism extends in the left-right width direction. In the processing case, a branch-cylinder processing cylinder for processing the second item is disposed so as to be rotatable around a longitudinal axis.

JP 2007-111057 A

  By the way, in the configuration of Patent Document 1, the feeding and dispersion of the second product returned from the branch-branch processing mechanism is mainly performed by the swing motion of the swing sorter. Due to the relationship between the opening direction of the branch-branch processing mechanism and the rotation direction of the branch-branch processing cylinder, the rotation of the branch-branch processing cylinder does not contribute much to dispersing the second thing on the swing sorter. For this reason, the second item from the branch rachis processing mechanism tends to be biased directly below the outlet of the branch rachis processing mechanism. Moreover, the threshing that has been threshed by the handling cylinder of the threshing device is more likely to fall to a side closer to the rotation downstream side of the handling cylinder than to the left and right center of the swing sorter. Therefore, threshing and second deposits tend to concentrate and accumulate on one side of the rocking sorter near the rotation downstream side of the handling cylinder (near the discharge port), and threshing and no. There was a possibility that the sorting ability of the product was lowered, leading to the third loss and sorting failure.

  Therefore, the present invention has a technical problem to provide a combine that improves the current situation as described above.

  The invention of claim 1 includes a branch raft processing mechanism for processing the second thing on the feed end side of the second reduction mechanism for returning the second thing after the threshing selection to the threshing device or the swing sorter. A combine discharger that opens the second discharge portion that faces the threshing device from the branching mechanism to the lower surface of the handling cylinder in the threshing device in a side view. That's it.

  The invention according to claim 2 is the combine according to claim 1, wherein the branch infarction treatment mechanism has a branch infarction treatment case along one side wall of the threshing device in a posture inclined to a low height before and after, A branch-branch processing cylinder disposed in a branch-branch processing case so as to be rotatable about a front, rear, and rear axis, and the branch-branch processing case is connected to the threshing device via the second product discharge unit. The rotational direction of the branch raft processing cylinder is the communication direction so that the moving direction of the threshing that has been threshed by the handling cylinder and the moving direction of the second thing from the second thing discharge unit face each other. It is set to be opposite to the direction of rotation of the barrel.

  According to a third aspect of the present invention, there is provided the combine according to the second aspect, wherein the second reduction mechanism includes a reduction cylinder extending along one side wall of the threshing device in a posture inclined in a front-to-back and low-down state, and the reduction cylinder And a reduction conveyor disposed so as to be rotatable around a front and rear low axis, and the branch raft processing case is disposed below the front part of the reduction cylinder, and the rotation axis of the reduction conveyor And the rotation axis of the branch-branch processing cylinder extend in parallel.

  According to the present invention, the combine having a branch raft processing mechanism for processing the second thing on the feed terminal side of the second reduction mechanism for returning the second thing after the threshing selection to the threshing device or the rocking sorter. And since the second thing discharge part which faces in the threshing device from the branch rachis processing mechanism is opened so as to straddle up and down with respect to the lower surface of the handling cylinder in the threshing device in a side view, The scattering direction of the cereal from the handling cylinder and the scattering direction of the second thing from the second thing discharging part intersect each other in the vicinity of the left and right central part of the swing sorter.

  Accordingly, it is possible to cause the threshing and the second object to collide with each other in the vicinity of the center of the left and right of the rocking sorter and to diffuse (disperse) them. It is possible to prevent cereals and second crops from being concentrated and deposited near one side (near the second dumping portion). Since the threshing and second thing swinging and moving on the swing sorter can be diffused (dispersed) in the left-right width direction of the swing sorter, It is possible to improve the sorting processing capacity.

  According to the invention of claim 2, the branch rachis processing mechanism includes a branch rachis processing case along one side wall of the threshing device in a posture inclined in a low state after the front height, and a front height in the branch rachis processing case. A branch-brown treatment cylinder arranged to be rotatable around a rear low axis, and the branch-branch treatment case communicates with the threshing device through the second thing discharge unit, The direction of rotation of the branch raft cylinder is opposite to the direction of rotation of the handling cylinder so that the direction of movement of the threshing threshed in step 2 and the direction of movement of the second thing from the second thing discharge part face each other. Therefore, the direction in which the second object is released by the rotation of the branch-cylinder processing cylinder coincides with the direction in which the second object discharge part is opened.

  For this reason, the second thing from the second thing discharge part is distributed to the part far from the second thing discharge part among the rocking sorters using rotation of the branch branch processing cylinder. It can be discharged, and the sorting capacity in the swing sorter can be greatly improved. In addition, since the sorting processing capacity of the rocking sorter can be significantly improved, the length of the rocking sorter can be shortened without lowering the sorting capacity, and consequently the threshing device Can be made compact.

  According to invention of Claim 3, the said 2nd reduction | restoration mechanism is the attitude | position inclined in front and rear low state, the reduction | restoration pipe | tube extended along one side wall of the said threshing apparatus, and the front high rear low state in the said reduction | restoration pipe | tube. A reduction conveyor disposed rotatably around an axis, the branch raft processing case is disposed below the front of the reduction cylinder, and the rotation axis of the reduction conveyor and rotation of the branch raft processing cylinder Since the shaft extends parallel to the shaft, it is possible to lengthen the length of the branch-trunk processing cylinder in the rotational axis direction along one side wall of the threshing apparatus. Therefore, it is possible to secure a sufficient distance for the second thing to move in the branch rachis processing case for rethreshing, and it is possible to improve the rethreshing function of the second thing by the branch rachis processing cylinder.

It is a left view of the combine in embodiment. It is a right view of a combine. It is a top view of a combine. It is left side sectional drawing of a threshing apparatus. It is a front view of a threshing apparatus. It is left sectional drawing of the selection mechanism in a threshing apparatus. It is front sectional drawing which shows the relationship between a handling cylinder, a rocking | swiveling sorter, and a branch rachis processing mechanism. It is an enlarged right view which shows the closed state of a branch rachis processing mechanism. It is an enlarged right view which shows the open state of a branch rachis processing mechanism. It is front sectional drawing of the threshing apparatus which shows another example of the drive system with respect to a branch raft processing cylinder.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side.

(1). First, the overall structure of the combine will be described mainly with reference to FIGS. As shown in FIGS. 1 to 3, the combine according to the embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 (traveling portions). At the front part of the traveling machine body 1, a four-row mowing device 3 that takes in while harvesting the grains is mounted by a single-acting lifting hydraulic cylinder 4 so as to be movable up and down around the mowing rotation fulcrum shaft 4a. ing. A threshing device 5 having a feed chain 6 and a grain tank 7 for storing grain after threshing are mounted on the traveling machine body 1 side by side. The threshing device 5 is arranged on the left side in the forward direction of the traveling machine body 1 (see FIG. 3). Moreover, the grain tank 7 is arrange | positioned at the right side toward the advancing direction of the traveling body 1. A cradle base 8 is provided below the grain tank 7 (upper surface side of the traveling machine body 1). The grain in the grain tank 7 is discharged from the straw discharge port 9 on the lower surface side of the grain tank 7 to a straw bag (not shown) on the straw catcher 8. An operation unit 10 is provided on the right side of the reaping device 3 and on the front side of the grain tank 7.

  The driver 10 is provided with a step 11 and a driver seat 12 on which the operator gets on. Left and right side clutch levers 14 and 15 for steering are arranged on a handle column 13 in front of the driver seat 12. A travel speed change lever 17 and a work clutch lever 18 for operating the threshing clutch and the mowing clutch are disposed on the lever column 16 on the left side of the driver seat 12. An engine 20 as a power source is arranged below the driver seat 12.

  As shown in FIGS. 1 and 2, left and right track frames 21 are arranged on the lower surface side of the traveling machine body 1. The track frame 21 includes a drive sprocket 22 that transmits the power of the engine 20 to the traveling crawler 2, a tension roller 23 that maintains the tension of the traveling crawler 2, and a plurality of track rollers that hold the ground side of the traveling crawler 2 in a grounded state. 24. The driving sprocket 22 supports the front side of the traveling crawler 2, the tension roller 23 supports the rear side of the traveling crawler 2, and the track roller 24 supports the grounding side of the traveling crawler 2.

  As shown in FIGS. 1 to 3, below the cutting frame 221 connected to the cutting rotation fulcrum shaft 4 a of the cutting device 3, a clipper-type cutting blade device that cuts the stock of uncut grain culm in the field. 222 is provided. In front of the harvesting frame 221, a grain culling pulling device 223 for four ridges that raises an uncut grain culm in the field is arranged. Between the culm pulling device 223 and the front part (feed start end side) of the feed chain 6, a culm transporting device 224 that transports the chopped culm harvested by the cutting blade device 222 is arranged. In addition, in front of the lower part of the cereal habit raising device 223, a weeding body 225 for four ridges for weeding the uncut cereal in the field is projected. While the traveling crawler 2 is driven by the engine 20 to move within the field, the reaping device 3 is driven to continuously shave the uncut grain culm on the field.

  As shown in FIGS. 1, 2, and 4 to 6, the threshing device 5 includes a handling cylinder 26 for threshing threshing, and an oscillating sorting mechanism that sorts cereals falling below the handling cylinder 26. As a swing sorter 27, a tang fan 28 for supplying sorting wind to the swing sorter 27, and a dust exhaust fan 30 for discharging the dust discharged from the rear of the swing sorter 27 to the outside of the machine. . A handling cylinder shaft 26a that rotates the handling cylinder 26 extends along the conveying direction of the cereal by the feed chain 6 (in other words, the traveling direction of the traveling machine body 1).

  The handling cylinder 26 of the embodiment is of a lower handling type. The front end side of the handling cylinder shaft 26a is extended to the front side of the threshing machine housing 55 constituting the outer shape of the threshing device 5, and the bevel gear mechanism 46, the handling cylinder drive shaft 47 and the pulley 48. By transmitting the power of the engine 20 through a transmission system such as a belt 49, the handling cylinder 26 is configured to rotate clockwise in FIGS. The stock source side of the corn straw conveyed from the reaping device 3 by the corn straw conveying device 224 is inherited by the feed chain 6 and is nipped and conveyed. Then, the tip side of the cereal is carried into the handling chamber 26b of the threshing device 5, and threshed by the handling cylinder 26 that rotates clockwise in FIGS.

  As shown in FIGS. 1 to 4, a waste chain 34 is arranged on the rear end side (feed end side) of the feed chain 6. The waste (the grain from which the grain has been threshed) inherited from the rear end side of the feed chain 6 to the waste chain 34 is discharged to the rear of the traveling machine body 1 in the long state, or the rear side of the threshing device 5 After being cut to a suitable length by the waste cutter 35 provided at the front, the paper is discharged to the lower rear side of the traveling machine body 1.

  As shown in FIG. 4, on the lower side of the rocking sorter 27, a first conveyor 31 and a first basket 31a for taking out the grain (first thing) sorted by the rocking sorter 27, branches A second conveyor 32 and a second basket 32a are provided for taking out second items such as grain with an incline. The two conveyors 31 and 32 of the embodiment are arranged in the order of the first conveyor 31 and the second conveyor 32 from the front side in the traveling direction of the traveling machine body 1 to the upper side of the traveling machine body 1 on the upper side of the traveling machine body 1 in a side view. It is installed.

  As shown in FIGS. 4 to 7, the rocking sorter 27 is configured such that the cereal that has leaked from the receiving net 26 c stretched below the handling cylinder 26 is removed from the feed pan 271 and the chaff sheave of the rocking sorter 27. 272 is configured to perform peristaltic sorting (specific gravity sorting). The feed pan 271 of the embodiment is inclined obliquely downward and rearward from the front right side (the part near the grain tank 7 on the feed start end side) toward the rear left side (the part near the feed chain 6 on the feed end side). It is plate-shaped. By the inclined surface, the threshing that has been threshed in the handling cylinder 26 rolls (spreads) on the feed pan 271 toward the feed chain 6 side.

  The grain (first thing) dropped from the grain sieve 273 of the rocking sorter 27 is removed by the sorting air from the tang fan 28 and falls first onto the conveyor 31. In the first conveyor 31, a cereal cylinder 33 extending in the vertical direction communicates with a terminal portion protruding outward from a lower side wall 55 a (right side wall) near the grain tank 7 of the threshing device 5 (threshing machine basket 55). It is connected. The grain taken out first from the conveyor 31 is carried into the grain tank 7 by the cereal conveyor 33 a provided in the cereal cylinder 33 and collected in the grain tank 7.

  As shown in FIGS. 4 and 6, a stroller 274 is disposed on the downstream side (rear side) of the chaff sheave 272. Oscillating sorter 27 is a reduced reprocessed product for re-sorting such as grain with branches and branches from chaff sheave 272 or Strollack 274 by peristaltic sorting (specific gravity sorting). ) Is dropped onto the second conveyor 32 and the second basket 32a. The second product taken out by the second conveyor 32 is returned to the upper surface side of the feed pan 271 via the second reduction mechanism 60 and the branch-branch processing mechanism 61, which will be described later, and re-sorted.

  In addition, relatively light waste on the upper surface side of the chaff sheave 272 and the stroller 274 is sucked into the front suction port 30a of the dust exhaust fan 30 and discharged outside the machine from the rear discharge port 30b. . Further, the relatively heavy sawdust that has moved from the downstream side (rear side) of the chaff sheave 272 to the upper surface side of the stroller 274 is discharged from the third port 36 on the rear end side of the swing sorter 27 to the outside. It will be.

  As shown in FIGS. 4 and 6, the swing sorter 27 includes a swing drive shaft 56, a front guide rail 57, a rear guide rail 58, and a threshing machine housing 55 that forms the outer shape of the threshing device 5. It is arrange | positioned so that a reciprocation is possible through the front diagonally downward thru | or back diagonally upward. The swing sorter 27 is operated by the power from the engine 20 via the swing drive shaft 56, and the swing sorter 27 reciprocates from the front obliquely downward to the rear obliquely upward. As a result, the degranulated material leaked from the receiving net 26c stretched below the handling cylinder 26 is subjected to swing sorting (specific gravity sorting) by the feed pan 271 and the chaff sheave 272.

  As shown in FIGS. 5 and 7, the right frame plate 27 a of the swing sorter 27 is placed close to the inner surface of the lower side wall 55 a (right lower side wall) near the grain tank 7 in the threshing machine basket 55. It is confronting. One end side of the synthetic resin elastic seal material 50 is fixed to the upper end side of the right frame plate 27a, and the other end side of the elastic seal material 50 is elastically pressed to the inner side surface of the lower side wall 55a. By closing the gap between the lower side wall 55a and the right side frame plate 27a with the elastic sealing material 50, the unsorted material (degranulated material) on the upper surface side of the swing sorter 27 is separated from the lower side wall 55a and the right side frame plate 27a. Prevents entry into the gap.

  As shown in FIGS. 4 and 6, the tang fan case 28a of the tang fan 28 is supplied with the sorting air of the tang fan 28 toward the lower surface side of the grain sheave 273 and the upper side of the first conveyor 31 and the first hook 31a. A main selection air passage 41 to be supplied and a pre-air passage 42 for supplying the selection air of the tang fan 28 from the lower surface side of the feed pan 271 toward the lower surface side of the chaff sheave 272 are formed. The above-described main sorting air passage 41 is formed such that the sorting air from the Chinese fan 28 moves from the front lower side of the grain sieve 273 toward the rear upper side of the grain sieve 273.

  Further, the above-described main sorting air passage 41 is formed so that the sorting air from the Kara fan 28 moves from the front to the rear above the first conveyor 31 and the first basket 31a. That is, the grain and dust falling from the grain sieve 273 to the first conveyor 31 and the first basket 31 a are selected by the sorting wind from the tang fan 28. As a result, only the grain after the dust is removed falls to the first conveyor 31 and the first basket 31 a and is taken out to the grain tank 7 by the first conveyor 31.

  The pre-air passage 42 described above is formed such that the sorting air from the tang fan 28 moves from the front lower side to the rear upper side of the chaff sheave 272. That is, when the degranulated material that has fallen from the handling cylinder 26 to the upper surface of the feed pan 271 through the receiving net 26 c falls from the rear end side of the feed pan 271 to the front end side of the chaff sheave 272, Selected by wind. As a result, among the degranulated material that has moved from the feed pan 271 to the upper surface of the chaff sheave 272, the lower swarf (lightweight material) of the degranulated material close to the upper surface of the chaff sheave 272 is moved to the upper layer side by the sorting wind, The amount of sawdust falling from 272 is reduced.

  In addition, due to the specific gravity sorting action of the chaff sheave 272 and the wind selection of the sorting wind from the tang fan 28, the grain on the upper layer side (heavy article) of the shed product is moved to the lower layer side and leaked early from the chaff sheave 272. Will do. The specific gravity sorting action of the chaff sheave 272 is facilitated by the sorting wind from the tang fan 28 to improve its sorting processing ability (sorting accuracy).

  Note that the sorting air of the Kara fan 28 supplied from the main sorting air passage 41 and the pre-air passage 42 is sucked into the dust exhaust suction port 30a of the dust exhaust fan 30 and discharged from the exhaust port 30b. Since it moves from the gate 36 to the rear of the threshing machine housing 55, the sawdust, dust, etc. in the threshing material from the handling cylinder 26 are discharged toward the field from the rear part of the threshing machine housing 55. .

(2). Next, the structures of the second reduction mechanism 60 and the branch rachis processing mechanism 61 will be described with reference to FIGS. 4 to 9.

  The second reduction mechanism 60 is for returning the second product after the threshing and sorting to the threshing device 5 or the swing sorting board 27. A branch-branch processing mechanism 61 for processing the second product is provided on the feed end side of the second reduction mechanism 60. The second reduction mechanism 60 according to the embodiment includes a reduction cylinder 62 extending along the lower side wall 55a of the threshing device 5 in a posture inclined in a low shape before and after the front height, and around the axis of the front and rear height in the reduction cylinder 62. And a reduction conveyor 63 arranged rotatably. In the second conveyor 32, the feeding start end side (lower end) of the reducing conveyor 63 extending obliquely forward and upward to the feeding end portion protruding outward from the lower side wall 55a (lower right side wall) of the threshing machine basket 55 near the grain tank 7 is provided. Side) is connected so that power can be transmitted.

  As shown in FIGS. 4 and 6, a transfer case 65 is disposed on the outer surface of the lower side wall 55 a of the threshing machine housing 55. The lower end side of the reducing cylinder 62 is connected to the upward opening side of the transfer case 65. A reduction cylinder 62 is supported in a leaning posture in front and rear and along the outer surface of the lower side wall 55a of the threshing machine housing 55. The reduction cylinder 62 and the whipping cylinder 33 are arranged between the threshing device 5 and the grain tank 7 so as to cross each other in a side view. In this case, the reduction cylinder 62 is arranged offset with respect to the side closer to the lower side wall 55 a of the threshing machine basket 55 with respect to the whipping cylinder 33. In other words, the reducing cylinder 62 is located on the side close to the lower side wall 55a of the threshing machine basket 55 in front view, and the milling cylinder 33 is located on the side close to the grain tank 7 (the side far from the lower side wall 55a). .

  The right end side of the second conveyor shaft 32b in the second conveyor 32 and the lower end side of the reduction conveyor shaft 63a in the reduction conveyor 63 are rotatably supported by the transfer case 65 via bearing bearings (not shown). ing. The lower end side of the reduction conveyor shaft 63a is connected to the right end side of the second conveyor shaft 32b via a bevel gear mechanism (not shown). As will be described in detail later, the feed end side (upper end side) of the return conveyor shaft 63a is rotatably supported by a case body 91 of a drive case 87 that covers the feed end face (upper end surface) of the return cylinder 62. Therefore, the second thing that has leaked from the chaff sheave 272 and the stroller 274 to the second conveyor 32 and the second basket 32a is inherited from the second conveyor 32 to the reduction conveyor 63. The second item inherited by the reducing conveyor 63 is inherited from the reducing conveyor 63 to a branch raft processing cylinder 82, which will be described later, by a scraping blade 63b provided on the feeding end side of the reducing conveyor shaft 63a.

  The feed end side of the reduction cylinder 62 and the upper side wall 55 b of the threshing machine basket 55 are communicated with each other via a branch-branch processing mechanism 61. The branch rachis processing mechanism 61 includes a branch rachis processing case 81 along the upper side wall 55b of the threshing machine basket 55 in a posture inclined in a low shape before and after the front high, and a front and rear low axis in the branch raft processing case 81. And a branch-branch processing cylinder 82 arranged to be rotatable around. The branch-branch case 82 of the embodiment is disposed in the lower part (front lower side) of the reducing cylinder 62 on the feed end side. As shown in FIGS. 6, 8, and 9, the front and rear low processing cylinder rotation shafts 82 a of the branch raft processing cylinder 82 and the reduction conveyor shaft 63 a that is the rotation axis of the reduction conveyor 63 extend in parallel. ing.

  In the lower part of the left side surface near the threshing machine basket 55 (lower part of the fixed case 85 described later) of the branch rachis processing case 81, a second discharge part 83 facing the inside of the threshing device 5 from the branch rachis processing case 81 is formed to project. Has been. As shown in detail in FIG. 7, a fitting hole 84 is formed in the upper side wall 55 b of the threshing machine basket 55 so as to open up and down with respect to the front surface of the lower surface of the handling cylinder 26 in a side view. The second thing discharge | release part 83 of the branch incision processing case 81 is engage | inserted from the outer side to the fitting hole 84 of the upper side wall 55b. The second object discharge portion 83 opens toward the back surface side of the receiving net 26c so as to straddle the lower surface front portion of the handling cylinder 26 in a side view (see FIGS. 4 and 6). That is, the branch rachis processing case 81 communicates with the threshing device 5 via the second item discharge unit 83, and the branch rachis processing case 81 is directed from the second item discharge unit 83 toward the upper front side of the feed pan 271. The second one will be released.

  As a result, the threshing threshed on the lower side of the handling cylinder 26 that rotates clockwise in FIGS. 5 and 7 scatters from the left side to the right side of the upper surface of the feed pan 271, whereas The second object discharged from 83 is scattered from the right side to the left side of the upper surface of the feed pan 271. That is, the scattering direction of threshing from the handling cylinder 26 (direction from the feed chain 6 side toward the grain tank 7 side) and the scattering direction of the second thing from the second thing discharge part 83 (from the grain tank 7 side). The direction toward the feed chain 6 side) intersects in the vicinity of the left and right center of the feed pan 271.

  Accordingly, it is possible to disperse the cereal and the second thing by colliding with the left and right center portions of the feed pan 271 to disperse them. In addition, threshing and accumulation of the second thing can be prevented in the vicinity of the second thing discharge part 83). Further, the cereal and the second product that swings and moves from the feed pan 271 to the chaff sheave 272 can be diffused (dispersed) in the left-right width direction of the chaff sheave 272, and the sorting workability at the chaff sheave 272 can be improved.

  As shown in FIGS. 8 and 9, the branch and case processing case 81 includes a fixed case 85 attached to the upper side wall 55 b of the threshing machine basket 55, and a movable case 86 that can be opened and closed around the second reduction mechanism 60. Thus, the branch incision processing cylinder 82 is divided so as to be enclosed. In the closed state (see FIG. 8) in which the fixed case 85 and the movable case 86 are fitted together, the pair of these cases 85 and 86 (branch stem processing case 81) has a cylindrical shape (box shape) opened upward. . The upward opening sides of both cases 85 and 86 are covered with a drive case 87.

  The fixed case 85 that constitutes the left side of the branch raft processing case 81 is fastened to the upper side wall 55b of the threshing machine basket 55 with bolts or the like. In the lower part of the fixed case 85, a second object discharge portion 83 that is fitted into the fitting hole 84 of the upper side wall 55b from the outside is provided. The end of the movable case 86 near the second reduction mechanism 60 is fixed by welding or the like to one end side of a U-shaped cover 88 that surrounds the outer peripheral side of the scraping blade 63b provided on the feed end side of the reduction conveyor shaft 63a. ing. A cylindrical flange 89 penetrating the reduction conveyor shaft 63a is fixed to the lower end side of the U-shaped cover 88 by welding or the like. A ring portion 90 that protrudes downward from the cylindrical flange 89 is rotatably fitted to the feed terminal portion (upper end portion) of the reduction cylinder 62.

  A case body 91 constituting the drive case 87 is bolted to the upper end side of the U-shaped cover 87 and the upper end side of the movable case 86. The feed terminal side (upper end side) of the reduction conveyor shaft 63a is rotatably supported at a portion of the case main body 91 on the U-shaped cover 88 side. The ring portion 90 of the cylinder flange 89 is rotatably fitted to the feed end portion (upper end portion) of the reduction cylinder 62, and the feed end side (upper end side) of the reduction conveyor shaft 63a is rotatably supported by the case body 91. By doing so, the movable case 86 is configured to be able to open and close around the second reduction mechanism 60 (around the reduction conveyor shaft 63a) together with the drive case 87.

  As shown in detail in FIG. 7, in the closed state in which the fixed case 85 and the movable case 86 are fitted together, the U-shaped cover 88 on the feed end side of the reducing cylinder 62 and the branch-branch processing case 81 (both cases 84 and 85). The upper side of the is in communication. In other words, the U-shaped cover 88 and the upper side of the branch leaf treatment case 81 are connected to each other via a communication path that is inclined obliquely downward to the front. Therefore, the second item inherited by the reduction conveyor 63 is transferred into the branch-branch processing case 81 in a U-turn shape in a side view.

  As shown in FIGS. 8 and 9, the branch raft processing cylinder 82 for re-threshing the second item is provided with a front and rear low processing cylinder rotating shaft 82 a extending parallel to the reduction conveyor shaft 63 a. The lower end side of the processing cylinder rotating shaft 82 a is rotatably supported on the bottom plate of the movable case 86. The upper end side of the processing cylinder rotation shaft 82a is rotatably supported by a portion of the case main body 91 on the movable case 86 side. That is, the branch-branch processing cylinder 82 is disposed on the movable case 86 side, and is configured to be able to rotate around the second reduction mechanism 60 (around the reduction conveyor shaft 63a) together with the movable case 86. Therefore, in the open state (see FIG. 9) in which the movable case 86 is rotated around the second reduction mechanism 60 so as to be separated from the fixed case 85, the branch rachis processing cylinder 82 is exposed on the movable case 86 side.

  In the embodiment, the scattering direction of the threshing that has been threshed in the handling cylinder 26 (the direction from the feed chain 6 side toward the grain tank 7 side) and the scattering direction of the second thing from the second thing discharge unit 83 (grains) The rotation direction of the branch raft processing cylinder 82 is set to be opposite to the rotation direction of the handling cylinder 26 so that the tank 7 side faces the feed chain 6 side). In this case, the branch-cylinder processing cylinder 82 rotates counterclockwise in FIGS. 5 and 7, and the second discharge direction and the opening direction of the second discharge unit 83 due to the rotation of the branch-cylinder processing cylinder 82 are determined. (Both are in the direction from the grain tank 7 side toward the feed chain 6 side).

  On the processing cylinder rotating shaft 82a, a plurality of second processing teeth 97 for agitating the second object fed from the feed end side of the reduction cylinder 62, and the second object discharge part 83 toward the upper surface of the feed pan 271. And a plurality of (two) discharge vanes 98 that disperse the second object in the branch rachis case 81. As shown in detail in FIGS. 8 and 9, two discharge auger bodies 99 are fitted on the processing cylinder rotating shaft 82a. A plurality of second processing teeth 97 are arranged radially in the middle of the processing cylinder rotating shaft 82a. The tooth receiving teeth 100 located inside the branch rachis processing case 81 (inside the movable case 86) are provided so as to pass between two sets of second processing teeth 97.

  That is, a plurality of second processing teeth 87, a plurality of receiving teeth 100 that cannot be easily detached from the outside of the branch incision processing case 81, two discharge blades 98, 2 A strip discharge auger body 99 is arranged. The second thing transferred into the branch rachis processing case 81 by the scraping blade 63b of the reduction conveyor shaft 63a is sent to the lower end side from the upper end side of the branch rachis processing case 81 by the discharge auger body 99, and the second processing. The teeth 97 and the receiving teeth 100 are processed (eg, stabbed grains are shed or swarf is crushed). Two discharge vanes 98 are integrally provided radially on the lower end side of the discharge auger body 99. The processed second thing sent to the lower end side of the branch raft processing case 81 by the discharge auger body 99 is discharged from the second thing discharge part 83 toward the upper surface of the swing sorter 27 by the discharge blade 98. (See FIG. 7).

  As shown in FIG. 5 to FIG. 9, a drive case 87 is connected to the upper end side of the reducing cylinder 62 and the upper end side of the branch rachis processing case 81. The drive case 87 includes a plate-like case main body 91 and a case lid 92 that detachably covers the case main body 91. The case main body 91 of the embodiment is bolted to the upper end side of the U-shaped cover 88 and the upper end side of the movable case 86 located on the feed end side of the reduction cylinder 62. Therefore, in the closed state in which the fixed case 85 and the movable case 86 are fitted together, the upward opening on the feed terminal side of the reducing cylinder 62 and the upward opening on the branch-case processing case 81 (both cases 85 and 86) are in the case body 91. Will be blocked.

  A drive sprocket 101 as an example of a transmission vehicle is fixed to a protruding end portion (upper end side) of the return conveyor shaft 63a that is pivotally supported by the case body 91. Similarly, a driven sprocket 102 as an example of a transmission vehicle is fixed to a protruding end portion (upper end side) of the processing cylinder rotation shaft 82a that is pivotally supported by the case body 91. A chain 103 as an endless belt is wound around these sprockets 101 and 102. The case lid 92 is bolted to the case body 91 in a state where the sprockets 101 and 102 and the chain 103 are covered from above. If the case lid 92 is removed by loosening the bolts, the sprockets 101 and 102 and the chain 103 are exposed on the case main body 91.

  That is, the drive case 87 including the case main body 91 and the case lid 92 incorporates a transmission member (a transmission vehicle and an endless belt) that transmits power from the reduction conveyor 63 to the branch raft processing cylinder 82. ) A processing cylinder rotating shaft 82a of the branch raft processing cylinder 82 is connected to the feeding end side (upper end side) of the reduction conveyor shaft 63a via a transmission member in the drive case 87 so that power can be transmitted. Accordingly, by transmitting power from the second conveyor shaft 32b to the processing cylinder rotation shaft 82a via the reduction conveyor shaft 63a, the reduction conveyor 63 and the branch raft processing cylinder 82 are rotationally driven in conjunction with the second conveyor 32. Will do.

  As shown in detail in FIGS. 8 and 9, the fixed case 85 and the movable case 86 are switched between an unlocked state in which the movable case 86 can be opened and closed and a locked state in which the movable case 86 is held unrotatable. Locking means 105 is provided. The locking means 105 of the embodiment includes a locking bar 106 provided on the fixed case 85 side and a plurality of lock claws 107 provided on the movable case 86 side and capable of being engaged with and disengaged from the locking bar 106. Both ends of the locking bar 106 are fixed to the upper and lower bracket portions 108 protruding outward from the end surface of the fixed case 85 opposite to the second reduction mechanism 60. A vertically long rotating shaft 109 is rotatably supported on the free end side of the movable case 86. A plurality of lock claws 107 are fixed to the rotation shaft 109. An operation lever 110 is fixed to the rotating shaft 109 as an operation means for switching the movable case 86 between the unlocked state and the locked state. The operation lever 110 is always urged by a torsion spring 111 fitted to the rotation shaft 109 in a direction in which the lock claw 107 is engaged with the locking bar 106.

  Accordingly, when the operation lever 110 is turned to release the lock claw 107 from the locking bar 106, the lock is released, and the movable case 86 is rotated around the second reduction mechanism 60 together with the drive case 87 and the branch raft processing cylinder 82. It can be opened and closed (around the reduction conveyor shaft 63a). On the contrary, in the closed state where the fixed case 85 and the movable case 86 are fitted together, the movable case 86 is held so that it cannot be opened and closed by engaging the lock claw 107 with the locking bar 106 and locking. become.

  According to the above configuration, when the reaped cereals in the field are reaped by the reaping device 3 and the reaped cereals supplied from the reaping device 3 are threshed by the threshing device 5, the threshing that has fallen from the threshing device 5 is removed. Then, sorting is performed by the swing sorter 27. The most refined grains sorted by the swing sorter 27 are collected in the grain tank 7 by the first conveyor 31. In addition, when the mixture of grain and swarf as the second product selected by the swing sorter 27 falls on the second basket 32a, the second product is inherited from the second conveyor 32 to the reduction conveyor 63. Then, it is conveyed from the reduction conveyor 63 into the branch-branch case 81.

  The second thing taken into the branch infarction processing case 81 from the feed end side (upper end side) of the reduction cylinder 62 by the scraping blade 63b is processed by the second processing tooth 97 and the tooth receiving 100 (sagging of biting grains). Then, the waste is discharged from the second discharge unit 83 to the upper surface of the feed pan 271 by the discharge blade 98 and is again sorted by the swing sorter 27. Therefore, the grain in the second item is carried into the grain tank 7 from the first conveyor 31. Further, the sawdust in the second item is discharged out of the machine from the dust exhaust fan 30 or the third port 36 through the upper surface of the chaff sheave 272.

  In addition, the second conveyor 32, the reduction conveyor 63, and the branch-pipe processing cylinder 82 always rotate in conjunction with each other, but their rotational speeds are different. In the embodiment, the reduction conveyor 63 is set to rotate at a higher speed than the second conveyor 32, and the branch raft processing cylinder 82 is set to rotate at a higher speed than the reduction conveyor 63. That is, the conveyance amount per unit time of the reduction conveyor 63 is made larger than the conveyance amount per unit time of the second conveyor 32, and the conveyance amount per unit time of the branch raft processing cylinder 82 is larger than the conveyance amount of the reduction conveyor 63 per unit time. By increasing the conveyance amount, it is possible to prevent clogging of the second item during conveyance by the reduction conveyor 63 and the branch raft processing cylinder 82.

(3). Summary As is apparent from the above description and FIGS. 4, 6, and 7, the second product after the threshing sorting is returned to the feeding terminal side of the second reduction mechanism 60 for returning it to the threshing device 5 or the rocking sorter 27. It is a combine equipped with a branch rachis processing mechanism 61 for processing the item, and the second thing discharge unit 83 facing the threshing device 5 from the branch rachis processing mechanism 61 is in the threshing device 5 in a side view. Since it opens so that it may straddle up and down with respect to the lower surface of the handling cylinder 26, the scattering direction of the threshing from the handling cylinder 26 (direction which goes to the grain tank 7 side from the feed chain 6 side), and second thing discharge | release The scattering direction of the second item from the portion 83 (the direction from the grain tank 7 side toward the feed chain 6 side) intersects in the vicinity of the left and right center portion of the swing sorter 27.

  Accordingly, it is possible to cause the cereal and the second object to collide and diffuse (disperse) in the vicinity of the left and right central portions of the swing sorter 27 and to rotate the downstream side of the handling cylinder 26 in the swing sorter 27. It is possible to prevent cereals and second crops from being concentrated and deposited near one side (near the second dumping portion 83). Further, since the threshing and second thing swinging and moving on the swing sorting board 27 can be diffused (dispersed) in the left-right width direction of the swing sorting board 27, the cereal and second thing on the swing sorting board 27 can be dispersed. It is possible to improve the sorting processing capacity.

  As is clear from the above description and FIGS. 7 to 9, the branch rachis processing mechanism 61 has a branch rachis processing case 81 along the upper side wall 55b of the threshing device 5 in a posture inclined in a low state before and after, A branch raft processing cylinder 82 is disposed in the branch rachis processing case 81 so as to be rotatable around the front, rear, and rear axis, and the branch rachis processing case 81 is connected to the threshing device via the second item discharge unit 83. 5, and the rotational direction of the branch raft processing cylinder 82 is such that the moving direction of the threshing that has been threshed by the handling cylinder 26 faces the moving direction of the second thing from the second thing discharge unit 83. Is set in the direction opposite to the rotation direction of the handling cylinder 26, the second discharge direction and the second discharge portion 83 opening direction due to the rotation of the branch branch processing cylinder 82 coincide with each other (both The direction is from the grain tank 7 side toward the feed chain 6 side).

  For this reason, the second thing from the second thing discharge | release part 83 is used to the vicinity of the feed chain 6 side far from the second thing discharge | release part 83 among the rocking | swiveling sorters 27 using the rotation of the branch branch processing cylinder 82. Can be dispersed and discharged, and the sorting processing capability of the swing sorter 27 can be greatly improved. In addition, since the sorting processing capacity of the rocking sorter 27 can be remarkably improved, the length of the rocking sorter 27 can be shortened without lowering the sorting ability. Can be made compact.

  As apparent from the above description and FIGS. 8 and 9, the second reduction mechanism 60 includes a reduction cylinder 62 that extends along the lower side wall 55 a of the threshing device 5 in a posture inclined in a low state after the front height and the reduction cylinder. 62 is provided with a reduction conveyor 63 disposed so as to be rotatable around a front and rear low axis, and a branch raft processing case 81 is disposed below the front portion of the reduction cylinder 62. Since the reduction conveyor shaft 63a, which is the rotation shaft, and the processing cylinder rotation shaft 82a of the branch raft processing cylinder 82 extend in parallel, the length of the branch raft processing cylinder 82 in the direction of the processing cylinder rotation axis 82a is set to the upper side wall 55b. It becomes possible to make it long along. Therefore, a sufficient distance can be secured for the second thing to move in the branch-breast processing case 81 for re-threshing, and the re-threshing function of the second thing by the branch-brown treatment cylinder 82 can be improved.

  As apparent from the above description and FIGS. 8 and 9, the second product is processed on the feed end side of the second reduction mechanism 60 that returns the second product after the threshing selection to the threshing device 5 or the rocking sorter 27. The branch-branch processing mechanism 61 is provided with a branch-branch processing mechanism 61, and the branch-branch processing mechanism 61 is in a posture inclined in a front-to-back and low-down state along the upper side wall 55b of the threshing device 5. And a branch rachis processing cylinder 82 disposed in the branch rachis processing case 81, and the branch rachis processing case 81 includes a fixed case 85 attached to the upper side wall 55 a of the threshing device 5, and a second reduction mechanism. A movable case 86 that can be opened and closed around 60 is divided so as to enclose the peduncle treatment cylinder 82. Therefore, the movable case 86 is simply opened and rotated around the second reduction mechanism 60. , Can open the inside of branch branch treatment case 81Therefore, for example, in maintenance work such as removal of clogging in the branch rachis processing case 81, it is not necessary to disassemble the branch rachis processing case 81, and maintenance workability can be improved.

  As is clear from the above description and FIGS. 8 and 9, the branch raft processing cylinder 82 is disposed on the movable case 86 side and is configured to be rotatable around the second reduction mechanism 60 together with the movable case 86. Therefore, for example, when clogging occurs in the branch bough processing case 81, the branch baffle processing cylinder 82 as a driving member can be moved by opening and closing the movable case 86, and clogging can be easily removed. In addition, since the branch rachis processing cylinder 82 is on the movable case 86 side, the replacement operation of the branch rachis processing cylinder 82 can be simplified.

  As is apparent from the above description and FIGS. 8 and 9, an operating lever as an operating means for switching between the unlocked state in which the movable case 86 can be opened and closed and the locked state in which the movable case 86 is held unrotatable. 110 is provided, the movable case 86 can be switched between the unlocked state and the locked state in one-touch by a tool-less switching operation using the operation lever 110. Therefore, even when a clogging or the like in the branch rachis processing case 81 occurs during the harvesting operation in the field, the maintenance operation can be easily performed on the spot.

  As apparent from the above description and FIGS. 7 to 9, the second product is processed on the feed end side of the second reduction mechanism 60 that returns the second product after the threshing selection to the threshing device 5 or the rocking sorter 27. The second reduction mechanism 60 includes a reduction cylinder 62 that extends along the lower side wall 55a of the threshing device 5, and is rotatably disposed within the reduction cylinder 62. The branch conveyor system 61 includes a branch plant case 81 along the upper side wall 55b of the threshing device 5, and a branch disposed rotatably in the branch plant case 81. A reduction conveyor shaft 63a, which is a rotation shaft of the reduction conveyor 63, and a processing cylinder rotation shaft 82a of the branch-infection processing cylinder 82 extend in parallel, and one end of the reduction conveyor shaft 63a. And one end of the processing cylinder rotating shaft 82a. Since the drive case 87 incorporating the sprockets 101 and 102 and the chain 103 wound around the sprockets 101 and 102 is connected to the reduction cylinder 62 and the branch raft processing case 81, the rotational power of the reduction conveyor 63 Can be transmitted to the branch-branch processing cylinder 82 via the transmission members (both sprockets 101 and 102 and the chain 103) in the drive case 87.

  For this reason, the branch power cylinder 82 can be driven in conjunction with the reduction conveyor 63 using the rotational power of the reduction conveyor 63. In addition, since the power is transmitted from the reduction conveyor 63 to the branch-cylinder processing cylinder 82 with only the transmission members composed of the sprockets 101 and 102 and the chain 103, the drive system for the branch-cylinder processing cylinder 82 can be simplified, and the number of parts can be reduced. it can. Further, since the drive case 87 can be used as a support member for the branch rachis processing case 81, the support structure of the branch rachis processing case 81 can be easily configured, and the support strength of the branch rachis processing case 81 can be easily secured.

  As shown in the above description and FIGS. 8 and 9, the branch rachis processing case 81 is movable so that it can be opened and closed around the fixed case 85 attached to the upper side wall 55 b of the threshing device 5 and the second reduction mechanism 60. The case 86 is divided so as to be able to enclose the branch rachis processing cylinder 82, and the drive case 87 is configured to be rotatable around the second reduction mechanism 60 together with the movable case 86. The case 87 is a member that transmits power from the reduction conveyor 63 to the branch-pipe processing cylinder 82, but does not obstruct the opening and closing of the movable case 86. Further, since the drive case 87 is on the movable case 86 side, it is possible to simplify the replacement work of the transmission member in the drive case 87 as well as the branch raft processing cylinder 82.

  As shown in the above description and FIGS. 8 and 9, the drive case 87 includes a case body 91 and a case lid 92 that covers the case body 91, both sprockets 101, 102, and the chain 103. Since the case main body 91 is connected to the terminal end side and the movable case 86, and the case lid 92 is detachably attached to the case main body 91, the drive case in a state where both the sprockets 101, 102 and the chain 103 are assembled. 87 can be handled as a drive unit of the branch-branch processing mechanism 61. Further, the assembly and disassembly workability of the transmission members (both sprockets 101 and 102 and the chain 103) in the drive case 87 can be improved.

(4). Others The present invention is not limited to the above-described embodiment, and can be embodied in various forms. For example, the present invention is not limited to the above-described self-removing combine, but can be applied to a normal combine. Further, the drive system for the branch rachis processing cylinder 82 is not limited to the transmission member including both the sprockets 101 and 102 and the chain 103 as described above, and may be a gear mechanism. That is, as shown in FIG. 10, the driving flat gear 201 is fixed to the feeding end side protruding end portion of the reduction conveyor shaft 63a, the driven flat gear 202 is fixed to the feeding start end side protruding end portion of the processing cylinder rotating shaft 82a, These flat gears 201 and 202 may be engaged with each other via a relay flat gear 203 rotatably supported on the case main body 91. In addition, the structure of each part is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention.

5 Threshing device 26 Handling cylinder 27 Oscillating sorter board 55 Threshing machine housing 60 Second reduction mechanism 61 Branch / infection processing mechanism 62 Reduction cylinder 63 Reduction conveyor 81 Branch / infection processing case 82 Branch / infection processing cylinder 82a Processing cylinder rotation shaft 83 Second item Release part 85 Fixed case 86 Movable case 87 Drive case 91 Case body 92 Case lid 101 Drive sprocket 102 as a transmission vehicle Driven sprocket 103 as a transmission vehicle Chain 110 as an endless belt Operation lever as an operation means

Claims (3)

On the feed terminal side of the second reduction mechanism for returning the second thing after the threshing sorting to the threshing device or the rocking sorter, it is a combine equipped with a branch raft processing mechanism for processing the second thing,
The second thing discharge part facing in the threshing device from the branch rachis processing mechanism is opened so as to straddle up and down with respect to the lower surface of the handling cylinder in the threshing device in side view
Combine. The branch rachis processing mechanism is rotated around an axis of a front raft and a rear raft in the branch rachis processing case along a side wall of the threshing device in a posture inclined to a lower height after the front height A branch-branch treatment cylinder disposed in a possible manner, and the branch-branch treatment case communicates with the threshing device via the second discharge unit,
The rotational direction of the branch raft processing cylinder is the rotational direction of the treatment cylinder so that the movement direction of the threshing threshed by the treatment cylinder and the movement direction of the second thing from the second thing discharge part face each other. And set in the opposite direction,
The combine according to claim 1. The second reduction mechanism is disposed so as to be able to rotate about a front-rear-rear-low-low axis within the reduction cylinder, and a reduction cylinder extending along one side wall of the threshing device in a posture inclined in a low-rear position. A reduction conveyor,
The branch rachis processing case is disposed below the front of the reducing cylinder, and the rotation axis of the reducing conveyor and the rotation axis of the branch raft cylinder extend in parallel.
The combine according to claim 2.

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